206566211316071 has 2 divisors, whose sum is σ = 206566211316072. Its totient is φ = 206566211316070.

The previous prime is 206566211316037. The next prime is 206566211316133. The reversal of 206566211316071 is 170613112665602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206566211316071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206566211316001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103283105658035 + 103283105658036.

It is an arithmetic number, because the mean of its divisors is an integer number (103283105658036).

Almost surely, 2^{206566211316071} is an apocalyptic number.

206566211316071 is a deficient number, since it is larger than the sum of its proper divisors (1).

206566211316071 is an equidigital number, since it uses as much as digits as its factorization.

206566211316071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 206566211316071 in words is "two hundred six trillion, five hundred sixty-six billion, two hundred eleven million, three hundred sixteen thousand, seventy-one".